扫描间距对选区激光熔化IN718合金微观组织的影响

doi:10.13251/j.issn.0254-6051.2021.10.022

金属热处理 ›› 2021, Vol. 46 ›› Issue (10): 127-132.DOI: 10.13251/j.issn.0254-6051.2021.10.022

扫描间距对选区激光熔化IN718合金微观组织的影响

郑俊楠¹, 金头男¹, 方晓英², 马铁军¹, 李伟¹

1.北京工业大学材料与制造学部, 北京 100124;
2.山东理工大学机械工程学院, 山东淄博 255000

收稿日期:2021-05-07 出版日期:2021-10-25 发布日期:2021-12-08
通讯作者: 金头男,教授,E-mail: tnjinkim@bjut.edu.cn
作者简介:郑俊楠(1993—)男,硕士研究生,主要研究方向为SLM增材制造微观组织分析,E-mail:zhengjunnan0908@163.com

Effect of scanning interval on microstructure of IN718 alloy formed by SLM

Zheng Junnan¹, Jin Tounan¹, Fang Xiaoying², Ma Tiejun¹, Li Wei¹

1. Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China;
2. School of Mechanical Engineering, Shandong University of Technology, Zibo Shandong 255000, China

Received:2021-05-07 Online:2021-10-25 Published:2021-12-08

摘要/Abstract

摘要： 通过选区激光熔化(SLM)技术制备了IN718合金,利用X射线显微镜、X射线衍射仪、扫描电镜和电子背散射衍射等技术分析了IN718合金的致密性、相组成和晶粒形态以及取向关系。结果表明:SLM成形IN718合金的物相组成为面心立方结构的γ-Ni相与体心四方结构的γ″相,晶粒沿构建方向呈柱状晶。当激光扫描间距为100 μm时合金的致密度达到最高,当激光扫描间距为90 μm时,合金沿构建方向形成强<001>织构。

关键词: 选区激光熔化, IN718合金, 扫描间距, 致密性, 微观组织

Abstract: IN718 alloy was prepared byusing selective laser melting(SLM) technology, and the compactness, phase composition, grain morphology and orientation of IN718 alloy was analyzed by means of X-ray microscope, X-ray diffractometer, scanning electron microscope and electron backscattered diffraction techniques. The results show that the phaseof the IN718 alloy formed by SLM is composed of face-centered cubic structure γ-Ni phase and body-centered tetragonal γ″ phase, and columnar crystal grains formed along building direction. When the laser scanning interval is 100 μm, the density of the alloy reaches the highest. When the laser scanning interval is 90 μm, a strong <001> texture is formed along the building direction

Key words: selective laser melting, IN718 alloy, scanning interval, compactness, microstructure

中图分类号:

TG146

郑俊楠, 金头男, 方晓英, 马铁军, 李伟. 扫描间距对选区激光熔化IN718合金微观组织的影响[J]. 金属热处理, 2021, 46(10): 127-132.

Zheng Junnan, Jin Tounan, Fang Xiaoying, Ma Tiejun, Li Wei. Effect of scanning interval on microstructure of IN718 alloy formed by SLM[J]. Heat Treatment of Metals, 2021, 46(10): 127-132.

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扫描间距对选区激光熔化IN718合金微观组织的影响

Effect of scanning interval on microstructure of IN718 alloy formed by SLM

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